This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 8 |
| 4 | 32 |
| 5 | 88 |
| 6 | 256 |
| 7 | 736 |
| 8 | 2032 |
| 9 | 5376 |
| 10 | 14224 |
| 11 | 36976 |
| 12 | 95504 |
| 13 | 243536 |
| 14 | 619168 |
| 15 | 1559168 |
| 16 | 3916960 |
| 17 | 9769072 |
| 18 | 24321552 |
| 19 | 60199464 |
| 20 | 148803824 |
| 21 | 366051864 |
| 22 | 899559584 |
| 23 | 2201636848 |
| 24 | 5384254000 |
| 25 | 13121348672 |
| 26 | 31957730688 |
| 27 | 77595810512 |